Considering the cultural context of ancient Israel, what was the primary social significance of the act of 'gleaning,' as exemplified by Ruth in the Book of Ruth?

A It was a common practice for wealthy landowners to display their generosity and gain social status. B It was primarily a religious ritual performed to appease the gods of the harvest. C It was a legally mandated provision within the Mosaic Law designed to provide for the poor and marginalized in society. D It was a form of early agricultural innovation aimed at maximizing crop yields.